feat: Reinitialize frontend with SvelteKit and TypeScript

- Delete old Vite+Svelte frontend
- Initialize new SvelteKit project with TypeScript
- Configure Tailwind CSS v4 + DaisyUI
- Implement JWT authentication with auto-refresh
- Create login page with form validation (Zod)
- Add protected route guards
- Update Docker configuration for single-stage build
- Add E2E tests with Playwright (6/11 passing)
- Fix Svelte 5 reactivity with $state() runes

Known issues:
- 5 E2E tests failing (timing/async issues)
- Token refresh implementation needs debugging
- Validation error display timing

frontend/node_modules/libphonenumber-js/build/legacy/isPossibleNumber.js

@@ -0,0 +1,35 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = isPossibleNumber;
+var _getNumberType = require("./getNumberType.js");
+var _isPossible = _interopRequireDefault(require("../isPossible.js"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
+/**
+ * Checks if a given phone number is possible.
+ * Which means it only checks phone number length
+ * and doesn't test any regular expressions.
+ *
+ * Examples:
+ *
+ * ```js
+ * isPossibleNumber('+78005553535', metadata)
+ * isPossibleNumber('8005553535', 'RU', metadata)
+ * isPossibleNumber('88005553535', 'RU', metadata)
+ * isPossibleNumber({ phone: '8005553535', country: 'RU' }, metadata)
+ * ```
+ */
+function isPossibleNumber() {
+  var _normalizeArguments = (0, _getNumberType.normalizeArguments)(arguments),
+    input = _normalizeArguments.input,
+    options = _normalizeArguments.options,
+    metadata = _normalizeArguments.metadata;
+  // `parseNumber()` would return `{}` when no phone number could be parsed from the input.
+  if (!input.phone && !(options && options.v2)) {
+    return false;
+  }
+  return (0, _isPossible["default"])(input, options, metadata);
+}
+//# sourceMappingURL=isPossibleNumber.js.map